>> we open up the doors every thursday night at the california academy of sciences. there are certain things you can see every week you can go to the museum, visit the planetarium, and we bring in bars and a deejay or band. it is a different feel from during the day, something different every week. tonight , we have beer and music. -- tonight we have great beer and music. it is beer week. we have a dozen local brewers in african hall. we have a deejays to set up throughout the museum and a live performance at 9:00 p.m. tonight. >> what has been your favorite part as a participant or as an observer? >> my favorite part is to walk around the aquarium in to see people with a drink in their hands, getting to know maybe somebody new, may be looking for a day, or chatting with friends. there jellyfish. i mean, they are beautiful.